CN111607992A - Method for pre-treating polyester cotton and dyeing polyester in one bath - Google Patents
Method for pre-treating polyester cotton and dyeing polyester in one bath Download PDFInfo
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- CN111607992A CN111607992A CN202010372709.XA CN202010372709A CN111607992A CN 111607992 A CN111607992 A CN 111607992A CN 202010372709 A CN202010372709 A CN 202010372709A CN 111607992 A CN111607992 A CN 111607992A
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- bath
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- cotton
- dyed
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- 229920000742 Cotton Polymers 0.000 title claims abstract description 96
- 238000004043 dyeing Methods 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 68
- 229920000728 polyester Polymers 0.000 title claims abstract description 38
- 239000000986 disperse dye Substances 0.000 claims abstract description 38
- 238000005406 washing Methods 0.000 claims abstract description 38
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 27
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 22
- 229920004934 Dacron® Polymers 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 19
- 239000000985 reactive dye Substances 0.000 claims abstract description 18
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 11
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 11
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 11
- 238000009980 pad dyeing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 16
- 238000002203 pretreatment Methods 0.000 claims description 8
- VGKYEIFFSOPYEW-UHFFFAOYSA-N 2-methyl-4-[(4-phenyldiazenylphenyl)diazenyl]phenol Chemical compound Cc1cc(ccc1O)N=Nc1ccc(cc1)N=Nc1ccccc1 VGKYEIFFSOPYEW-UHFFFAOYSA-N 0.000 claims description 3
- TUXJTJITXCHUEL-UHFFFAOYSA-N disperse red 11 Chemical compound C1=CC=C2C(=O)C3=C(N)C(OC)=CC(N)=C3C(=O)C2=C1 TUXJTJITXCHUEL-UHFFFAOYSA-N 0.000 claims description 3
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004061 bleaching Methods 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000012752 auxiliary agent Substances 0.000 abstract description 2
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 description 10
- 238000010186 staining Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 7
- 229920004933 Terylene® Polymers 0.000 description 6
- 239000006185 dispersion Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000009969 top dyeing Methods 0.000 description 3
- 229920000433 Lyocell Polymers 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 235000019005 Digitaria californica Nutrition 0.000 description 1
- 241001115843 Digitaria californica Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000004044 disperse dyeing Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/0024—Dyeing and bleaching in one process
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
- D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
- D06L4/13—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using inorganic agents
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/16—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using dispersed, e.g. acetate, dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/445—Use of auxiliary substances before, during or after dyeing or printing
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed dyestuffs
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/02—After-treatment
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention provides a dyeing-washing one-bath method for polyester-cotton pretreatment, which comprises the following steps: carrying out polyester bath dyeing: adding hydrogen peroxide, an alkaline leveling agent and a disperse dye into the polyester fabric in sequence for dyeing to obtain bath-dyed polyester; cotton pad dyeing: adding reactive dye, sodium sulfate solution and sodium carbonate solution into cotton fabric in sequence for dyeing to obtain pad-dyed cotton; one-bath soaping: and adding dacron into the bath-dyed dacron and the sleeve-dyed cotton for soaping to obtain the pretreated polyester-cotton. According to the polyester-bath dyeing method for the polyester-cotton pretreatment, the specific alkaline disperse dye is selected, and meanwhile, the auxiliary agent is used for carrying out oxygen bleaching, dyeing and washing-bath treatment on the polyester-cotton knitted fabric under the alkaline condition, so that the process is simplified and shortened, the production efficiency is improved, the quality is guaranteed, and meanwhile, the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The invention relates to the field of fiber preparation, in particular to a dyeing-washing one-bath method for polyester-cotton pretreatment.
Background
In the traditional process, the refining oxygen bleaching of cotton fibers needs to be carried out under an alkaline condition, and hydrogen peroxide is needed, while the traditional polyester fiber disperse dyeing needs to be carried out under a weak acid condition. Therefore, the pH values of the terylene dyeing bath and the cotton fiber bleaching bath are in contradiction, and if the alkali in the former bleaching bath is not completely removed, the pH value of the terylene acid condition can be caused to fluctuate, so that the dyeing quality is caused to fluctuate. However, polyester fabrics are easy to generate oligomers under acidic conditions and are attached to the surface of the fibers in a large amount, so that the performance and appearance quality of the fibers are affected; in addition, a large amount of oily oligomer can be firmly attached to the inner wall and the pipeline of the high-temperature high-pressure machine, so that the difficulty in cleaning the cylinder body is increased; in addition, the polyester-cotton blended fabric is dyed under the acidic high-temperature condition, and the long-time action of acid can cause the phenomena of hydrolysis and strength reduction of cotton fibers, thereby affecting the product quality. After dyeing, reduction cleaning is carried out, so that a large amount of energy sources such as water, electricity and the like are consumed, and a large amount of time is consumed. The whole process flow is complex and tedious, the process time is dozens of hours, the production efficiency is low, the consumption of water, electricity and steam is large, and the sewage discharge is large; and because the wet processing time is long, the cloth cover is easy to fluff and the hand feeling of the fabric is influenced, and the product quality and the economic benefit of enterprises are reduced.
Disclosure of Invention
The invention aims to solve the problems and provides a method for dyeing and washing one bath for polyester-cotton pretreatment, which selects specific alkaline disperse dyes and simultaneously applies an auxiliary agent to carry out oxygen bleaching, dyeing and washing one bath treatment on the polyester-cotton knitted fabric under an alkaline condition, thereby simplifying and shortening the process flow, improving the production efficiency, ensuring the quality and achieving the effects of energy conservation and emission reduction.
In order to achieve the purpose, the invention provides a dyeing-washing one-bath method for pre-treatment of polyester cotton, which comprises the following steps:
carrying out polyester bath dyeing: adding hydrogen peroxide, an alkaline leveling agent and a disperse dye into a first mixture consisting of a polyester fabric and water according to a mass ratio of 1:6-1:10 in sequence, and dyeing for 40-60min under the conditions that the bath ratio ranges from 1:6-1:10, the bath dyeing pH range is 9.5-10.5, and the bath dyeing temperature range is 125-135 ℃ to obtain bath-dyed polyester, wherein the concentration ranges of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 3-8g/L, 1.5-2.5g/L and 1-3 g/L;
cotton pad dyeing: adding reactive dye, sodium sulfate and sodium carbonate into a second mixture consisting of cotton fabric and water in a mass ratio of 1:6-1:10 in sequence, and dyeing at the over-dyeing temperature of 60-80 ℃ and under the over-dyeing pH range of 9.5-11 to obtain over-dyed cotton, wherein the mass concentrations of the added reactive dye, the added sodium sulfate and the added sodium carbonate are 1-5g/L, 10-100g/L and 5-30g/L respectively;
one-bath soaping: adding dacron cleaner into a third mixture consisting of the bath-dyed dacron, the sleeve-dyed cotton and water, and soaping for 20-30min at the soaping temperature of 80-90 ℃ to obtain pretreated polyester-cotton, wherein the mass ratio of the total amount of the bath-dyed dacron and the sleeve-dyed cotton to the water in the third mixture is 1:6-1:10, and the mass ratio of the bath-dyed dacron to the sleeve-dyed cotton is 1: 0.4-1: 2.3, the concentration range of the added terlitine is 1-1.5 g/L.
Further, the dyeing-washing-bath method for the polyester-cotton pretreatment provided by the invention is characterized in that the disperse dye is any one or the combination of disperse red ALK, disperse yellow ALK and disperse blue ALK of Longsheng basic disperse dye ALK (N) series.
Further, the method for dyeing and washing one bath for the pre-treatment of the polyester cotton, provided by the invention, is also characterized in that the alkaline leveling agent comprises any one of a leveling agent HK2030, a leveling agent TF and a leveling agent DBKAK-47.
Further, the method for dyeing and washing one bath for the pre-treatment of polyester cotton, provided by the invention, is also characterized in that the alkaline leveling agent is a leveling agent HK 2030.
Furthermore, the method for dyeing and washing one bath for the polyester-cotton pretreatment provided by the invention is characterized in that the concentrations of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 5g/L, 2g/L and 2 g/L.
Further, the method for dyeing the polyester-cotton bath for the polyester-cotton pretreatment is characterized in that the bath dyeing pH is 10.
Further, the method for dyeing and washing one bath for the polyester-cotton pretreatment provided by the invention is also characterized in that the bath ratio is 1:10, and the bath dyeing temperature is 130 ℃.
Further, the method for dyeing the polyester-cotton bath for the pretreatment of the polyester-cotton also has the characteristic that the concentration range of the added concentration of the polyester-litharge is 1-1.3 g/L.
Further, the method for dyeing the polyester-cotton one-bath for the polyester-cotton pretreatment is characterized in that the concentration of the added polyester-cotton clean is 1.3 g/L.
Further, the method for dyeing and washing one bath for the polyester-cotton pretreatment provided by the invention is characterized in that the soaping temperature is in the range of 85-90 ℃.
Action and Effect of the invention
The invention relates to a dyeing-washing-bath method for polyester-cotton pretreatment, which is characterized in that polyester is firstly dyed under alkaline conditions, the generation of oligomers is reduced under alkaline conditions, the step of reduction cleaning is omitted after dyeing is finished, cotton fibers are directly dyed by reactive dyes after washing, and finally, the residual dispersion, the floating color of the reactive dyes, some oligomers and other impurities on the fabrics are removed by dispersion and reactive washing-bath soap washing after dyeing is finished, so that the cleaning effect is achieved. The method for dyeing and washing one bath selects the disperse dye which has small staining on cotton or the disperse dye which can be removed by soaping or alkali washing, so that the alkali washing property is good, and when the reactive dye is fixed by adding alkali, not only the disperse dye on the surface of the terylene is easy to wash and remove, but also the disperse dye is easy to wash and remove the staining on the cotton. In the method for dyeing and washing one bath, the adopted polyester cotton alkaline dyeing process greatly shortens the dyeing process, saves the consumption of water and electricity, saves the time, and improves the equipment utilization rate and the production efficiency of workers.
Detailed Description
The method of dyeing a polyester bath for the pretreatment of polyester cotton according to the present invention will be described in detail with reference to examples. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention.
The invention provides a method for dyeing and washing one bath for polyester-cotton pretreatment, which comprises the following steps:
carrying out polyester bath dyeing: adding hydrogen peroxide, an alkaline leveling agent and a disperse dye into a first mixture consisting of a polyester fabric and water in a mass ratio of 1:6-1:10 in sequence, and dyeing for 40-60min under the conditions that the bath ratio ranges from 1:6-1:10, the bath dyeing pH ranges from 9.5 to 10.5 and the bath dyeing temperature ranges from 125 ℃ to 135 ℃ to obtain the bath-dyed polyester, wherein the concentration ranges of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 3-8g/L, 1.5-2.5g/L and 1-3 g/L.
Furthermore, in the one-bath dyeing and washing method for the pretreatment of polyester and cotton, because the one-bath dyeing and washing method does not have a reduction cleaning process in the traditional process, only water washing and soaping are needed, and disperse dyes with small cotton staining or disperse dyes with staining capable of being removed through soaping or alkali washing are selected. When the disperse dye with good alkali washing performance is used for fixing color by adding alkali into the reactive dye, not only the loose color of the disperse dye on the surface of the terylene is easy to wash out, but also the staining of the disperse dye to cotton is easy to wash out. In the present invention, the disperse dye may preferably be a lyocell basic disperse dye. Further, the disperse dye is any one or combination of disperse red ALK, disperse yellow ALK and disperse blue ALK of Longsheng basic disperse dye ALK (N) series. In some embodiments, the disperse dye employed is the lyocell basic disperse dye alk (n) series.
Further, in the method for dyeing and washing one bath for the pre-treatment of polyester cotton, provided by the invention, the alkaline leveling agent comprises any one of a leveling agent HK2030, a leveling agent TF and a leveling agent DBKAK-47. The basic leveling agent is preferably HK2030 because of its good leveling property. In some embodiments, the basic leveling agent employed is HK 2030.
In addition, in the dyeing-washing one-bath method for the polyester-cotton pretreatment, the preferable concentrations of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 5g/L, 2g/L and 2 g/L. In some embodiments, the concentrations of the added hydrogen peroxide, the added basic leveling agent and the added disperse dye are 5g/L, 2g/L and 2g/L respectively.
In addition, in the method for dyeing the polyester-cotton one-bath for the polyester-cotton pretreatment, the bath ratio is preferably 1:10, and the bath dyeing temperature is preferably 130 ℃, because the lower bath ratio is more favorable for the dyeing stability. In some embodiments, the bath ratio is 1:10, the bath dyeing temperature is 130 ℃, and finally the bath-dyed polyester is obtained.
Cotton pad dyeing: adding reactive dye, sodium sulfate and sodium carbonate into a second mixture consisting of cotton fabric and water in a mass ratio of 1:6-1:10 in sequence, and dyeing at the over-dyeing temperature of 60-80 ℃ and under the over-dyeing pH range of 9.5-11 to obtain over-dyed cotton, wherein the mass concentrations of the added reactive dye, the added sodium sulfate and the added sodium carbonate are 1-5g/L, 10-100g/L and 5-30g/L respectively.
Further, in the method for dyeing and washing one bath for the pre-treatment of polyester-cotton, the process adopted in the step of cotton top dyeing is the same as the traditional process, the mass concentrations of the added reactive dye, the sodium sulfate and the sodium carbonate are preferably 1g/L, 50g/L and 15g/L respectively, the top dyeing temperature is preferably 60 ℃, and the pH value of the top dyeing is 10. In some embodiments, the mass concentrations of the added reactive dye, the sodium sulfate and the sodium carbonate are 1g/L, 50g/L and 15g/L respectively, the overdosing temperature is preferably 60 ℃, and the overdosing pH is 10.
One-bath soaping: adding dacron cleaner into a third mixture consisting of the bath-dyed dacron, the sleeve-dyed cotton and water, and soaping for 20-30min at the soaping temperature of 80-90 ℃ to obtain pretreated polyester-cotton, wherein the mass ratio of the total amount of the bath-dyed dacron and the sleeve-dyed cotton to the water in the third mixture is 1:6-1:10, and the mass ratio of the bath-dyed dacron to the sleeve-dyed cotton is 1: 0.4-1: 2.3, the concentration range of the added terlitine is 1-1.5 g/L.
Specifically, in the method for dyeing and washing one bath for the pretreatment of polyester cotton, the concentration range of the added concentration of the terli is preferably 1-1.3g/L, and more preferably 1.3 g/L. Namely, the mass ratio of the total amount of the bath-dyed terylene and the sleeve-dyed cotton to the dacron is preferably 1:0.01-1:0.013, and more preferably 1: 0.013. In some embodiments, the mass ratio of the total amount of the bath-dyed polyester and the casing-dyed cotton to the dacron detergent is 1: 0.013.
in addition, in the dyeing and washing one-bath method for the polyester-cotton pretreatment, the soaping temperature is preferably in the range of 85-90 ℃ and most preferably 85 ℃. In some embodiments, the soaping temperature of the bath dyed polyester and the casing dyed cotton is 85 ℃.
Example 1
The dyeing equipment adopted in the embodiment is a high-temperature high-pressure liquid flow dyeing machine, Italian MCS dye vat, model MF-2XJHT, and the method for dyeing and washing one bath for polyester-cotton pretreatment comprises the following steps:
carrying out polyester bath dyeing: adding hydrogen peroxide, an alkaline leveling agent HK-2030 and a Longsheng alkaline disperse dye ALK (N) series into a first mixture consisting of polyester fabric and water according to a mass ratio of 1:10 in sequence, and dyeing 4060min under the conditions that a bath ratio is 1:10, a bath dyeing pH range is 10 and a bath dyeing temperature range is 130 ℃ to obtain bath-dyed polyester, wherein the concentrations of the added hydrogen peroxide, the alkaline leveling agent HK-2030 and the Longsheng alkaline disperse dye ALK (N) series are 5g/L, 2g/L and 2g/L respectively.
Cotton pad dyeing: adding reactive dye, sodium sulfate and sodium carbonate into a second mixture consisting of cotton fabric and water in a mass ratio of 1:10 in sequence, and dyeing at the condition that the resist dyeing temperature is 60 ℃ and the resist dyeing pH range is 10 to obtain resist-dyed cotton, wherein the mass concentrations of the added reactive dye, the added sodium sulfate and the added sodium carbonate are 1g/L, 50g/L and 15g/L respectively.
One-bath soaping: adding dacron cleaner into a third mixture consisting of the bath-dyed dacron, the casing-dyed cotton and water, and soaping for 20min at the soaping temperature range of 85 ℃ to obtain the pretreated polyester-cotton, wherein the mass ratio of the total amount of the bath-dyed dacron and the casing-dyed cotton to the water in the third mixture is 1:10, the mass ratio of the bath-dyed dacron to the casing-dyed cotton is 1:2, and the concentration of the added dacron cleaner is 1.3 g/L.
TABLE 1 comparison of the results of the conventional and inventive processes
Table 1 shows the comparison of the process effects of the conventional dyeing method in comparative example 1 and the one-bath method in example 1. As shown in table 1, in the results obtained by dyeing with two processes of traditional dyeing of polyester-cotton knitted fabric and one bath of oxygen bleaching and washing, the bleaching and dyeing one bath method in this embodiment requires shorter time for making small samples, only 3.5 hours, has a simpler process flow, only three baths, and requires longer time, 5 hours, and a more complex and unnecessary process for the conventional dyeing process; compared with the standard sample, the dyed sample has the color difference of less than 1.0, respectively 0.34 and 0.47, the soaping fastness and the rubbing fastness are both at the level of 4 and above, the bursting strength is not greatly different, and the product requirements are met, so that the one-bath method can completely replace the traditional process.
Effects and effects of the embodiments
According to the one-bath dyeing method for the polyester-cotton pretreatment, polyester is dyed under alkaline conditions, the generation of 'oligomers' is reduced under alkaline conditions, the reduction cleaning step is omitted after dyeing is completed, cotton fibers are directly dyed by reactive dyes after washing, and finally, the residual dispersion, the floating color of the reactive dyes, some 'oligomers' impurities and the like on the fabrics are removed by dispersion and reactive one-bath soap washing after dyeing is completed, so that the cleaning effect is achieved. Since the disperse dye with small cotton staining or the disperse dye with staining capable of being removed by soaping or alkali washing is selected in the one-bath dyeing and washing method in the embodiment, the alkali washing property is good, when the reactive dye is subjected to alkali fixation, not only can the loose color of the disperse dye on the surface of the terylene be easily washed away, but also the staining of the disperse dye to the cotton can be easily washed away. In the method for dyeing and washing one bath, the adopted polyester cotton alkaline dyeing process greatly shortens the dyeing process, saves the consumption of water and electricity, saves the time, and improves the equipment utilization rate and the production efficiency of workers.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A method for dyeing and washing one bath for polyester-cotton pretreatment is characterized by comprising the following steps: carrying out polyester bath dyeing: adding hydrogen peroxide, an alkaline leveling agent and a disperse dye into a first mixture consisting of a polyester fabric and water according to a mass ratio of 1:6-1:10 in sequence, and dyeing for 40-60min under the conditions that the bath ratio ranges from 1:6-1:10, the bath dyeing pH range is 9.5-10.5, and the bath dyeing temperature range is 125-135 ℃ to obtain bath-dyed polyester, wherein the concentration ranges of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 3-8g/L, 1.5-2.5g/L and 1-3 g/L;
cotton pad dyeing: adding reactive dye, sodium sulfate and sodium carbonate into a second mixture consisting of cotton fabric and water in a mass ratio of 1:6-1:10 in sequence, and dyeing at the over-dyeing temperature of 60-80 ℃ and under the over-dyeing pH range of 9.5-11 to obtain over-dyed cotton, wherein the mass concentrations of the added reactive dye, the added sodium sulfate and the added sodium carbonate are 1-5g/L, 10-100g/L and 5-30g/L respectively;
one-bath soaping: adding dacron cleaner into a third mixture consisting of the bath-dyed dacron, the sleeve-dyed cotton and water, and soaping for 20-30min at the soaping temperature of 80-90 ℃ to obtain pretreated polyester-cotton, wherein the mass ratio of the total amount of the bath-dyed dacron and the sleeve-dyed cotton to the water in the third mixture is 1:6-1:10, and the mass ratio of the bath-dyed dacron to the sleeve-dyed cotton is 1: 0.4-1: 2.3, the concentration range of the added terlitine is 1-1.5 g/L.
2. The dyeing-washing-bath method for polyester-cotton pretreatment according to claim 1, characterized in that the disperse dye is any one of disperse red ALK, disperse yellow ALK, disperse blue ALK of Longsheng basic disperse dye ALK (N) series or a combination thereof.
3. The method for dyeing one bath for the pre-treatment of polyester cotton according to claim 2, characterized in that the alkaline leveling agent comprises any one of leveling agent HK2030, leveling agent TF, leveling agent DBKAK-47.
4. The method for dyeing one bath for the pre-treatment of polyester cotton according to claim 3, characterized in that the alkaline leveling agent is a leveling agent HK 2030.
5. The dyeing-washing-bath method for the polyester-cotton pretreatment is characterized in that the concentrations of the added hydrogen peroxide, the alkaline leveling agent and the disperse dye are respectively 5g/L, 2g/L and 2 g/L.
6. The method for dyeing the polyester-bath for the polyester-cotton pretreatment according to claim 5, characterized in that the bath dyeing pH is 10.
7. The method for dyeing and washing one bath for the polyester-cotton pretreatment according to claim 6, characterized in that the bath ratio is 1:10, and the bath dyeing temperature is 130 ℃.
8. The method for dyeing the polyester-bath for the polyester-cotton pretreatment according to claim 1, wherein the concentration of the added polyester-litharge is in the range of 1-1.3 g/L.
9. The method for dyeing the polyester-bath for the polyester-cotton pretreatment according to claim 8, wherein the concentration of the added polyester-litharge is 1.3 g/L.
10. The method for dyeing and washing one bath for the pre-treatment of polyester-cotton according to claim 9, characterized in that the soaping temperature is in the range of 85-90 ℃.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030575A (en) * | 2020-09-21 | 2020-12-04 | 鲁泰纺织股份有限公司 | Method for dyeing yarn by using disperse dye dyeing wastewater |
| CN112252060A (en) * | 2020-10-21 | 2021-01-22 | 上海嘉乐股份有限公司 | Polyester cotton dyeing reduction-free cleaning process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030575A (en) * | 2020-09-21 | 2020-12-04 | 鲁泰纺织股份有限公司 | Method for dyeing yarn by using disperse dye dyeing wastewater |
| CN112252060A (en) * | 2020-10-21 | 2021-01-22 | 上海嘉乐股份有限公司 | Polyester cotton dyeing reduction-free cleaning process |
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